You can change the original position lights on your Volvo FH/FM årg. 2009 +. You can switch from white to colored lights. They are unfortunately not E-approved.
 
On the back of the lamp there is a small cap that must be cut and removed to get access. The hole can be closed again with a glue or by using a repair kit from Volvo: 82 237 133.
The price is for a complete set with 2 emitters.